Plate cylinder for offset rotary press, has torsion rod for stressing hook toward fixation position of printing plate, and releasing unit with electromagnets adapted to act on levers for bringing hook to released position

摘要

The cylinder (2) has a fixation device (8) for fixing a printing plate (10) on a cylindrical base body (4). The fixation device has a hook (22) movable between a released position of the printing plate and a fixation position of the plate, and fixed to a torsion rod (24). The device has another torsion rod for stressing the hook toward the fixation position. A releasing unit (40) has electromagnets adapted to act on levers (42) for bringing the hook to the released position. The torsion rods form housings that are filled with rubber.